in the index using the file name, which in this particular instance was unique. As you can see, the MD5 hashes don't match. From the overlay file ProdbegBates - File Name MD5 Hash SDNY_GM_00503260 Jeffrey VF2.psd DA92DFS7819FCC13F38E0584D8D77DFB SDNY GM 00506551 LSJ librarywindow150dpi.tif 58AC5CBE82